Gradient refractive index type anamorphic planar microlens and m

Details Gradient refractive index type anamorphic planar microlens and m Gradient refractive index type anamorphic planar microlens and m

1986-05-30

1989-02-21

Corbin, John K.

350420, G02B 300, G02B 1308

Patent

active

048059978

ABSTRACT:
The present invention provides a gradient refractive index type anamorphic planar microlens which can be utilized for collimating an elliptical beam radiated from a semiconductor laser, or the like, and a method of producing such a lens. To collimate light rays, in which astigmatism exists, it is necessary to use a lens in which the respective focal distances in the directions perpendicular to an optical axis are different from each other. It includes a semiellipsoidal refractive index distribution region formed in a transparent substrate so as to have a major axis and a minor axis on a surface of the transparent substrate.

REFERENCES:
patent: 4684222 (1987-08-01), Borrelli et al.
Distributed-Index Planar Microlens, Oikawa et al., Applied Optics, vol. 21, No. 6, (Mar. 15, 1982) pp. 1052-1056.
Webster's II New Riverside University Dictionary, Copyright 1984, The Riverside Publishing Company, p. 425.

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